Corrosion Assessment of ASME Qualified Welding Procedures for Grade 2101 Lean Duplex Stainless SteelCitation formats

  • Authors:
  • L. H. Guilherme
  • Pierfranco Reccagni
  • A. Benedetti
  • C. S. Fugivara
  • Dirk Engelberg

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Corrosion Assessment of ASME Qualified Welding Procedures for Grade 2101 Lean Duplex Stainless Steel. / Guilherme, L. H. ; Reccagni, Pierfranco; Benedetti, A. ; Fugivara, C. S. ; Engelberg, Dirk.

In: Corrosion, 2019.

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Guilherme, L. H. ; Reccagni, Pierfranco ; Benedetti, A. ; Fugivara, C. S. ; Engelberg, Dirk. / Corrosion Assessment of ASME Qualified Welding Procedures for Grade 2101 Lean Duplex Stainless Steel. In: Corrosion. 2019.

Bibtex

@article{0f229dcc0dbc4289b8402c733e37f5cd,
title = "Corrosion Assessment of ASME Qualified Welding Procedures for Grade 2101 Lean Duplex Stainless Steel",
abstract = "ASME qualified welding procedures do not guarantee suitable corrosion and passivation properties for lean duplex stainless steel welds. An evaluation of two ASME qualified welding procedures to optimize the corrosion performance of TIG welded grade 2101 duplex stainless steel using ER2209 weld consumable was conducted. The evolution of the microstructure was examined by optical and electron microscopy, ferrite-scope measurements, and Scanning Kelvin Probe Force Microscopy (SKPFM). An electrochemical mini-cell was then used to characterize the electrochemical behaviour of different weld regions using the techniques such as the double loop electrochemical potentio-kinetic reactivation test, standard potentio-dynamic polarization tests, and cyclic potentio-dynamic polarization. The fusion line was the most critical zone for localized corrosion for both welding procedures, due to the formation of Cr and Mo depleted zones, resulting in the highest degree of sensitization. The best performance was attributed to the weld face, due to the presence of higher Cr and Mo contents, highlighting the pitting corrosion resistance. A heat input range of 1.6-1.9 kJ/mm and low current density (WPS1) indicated better corrosion performance of all weld regions. The electrochemical corrosion response was in all cases related to microstructural characteristics of the weld regions. The influence of weld parameters on microstructure development and corrosion performance is discussed.",
keywords = "grade 2101 duplex stainless steel, TIG welding, SKPFM, electrochemical testing, DL-EPR testing",
author = "Guilherme, {L. H.} and Pierfranco Reccagni and A. Benedetti and Fugivara, {C. S.} and Dirk Engelberg",
year = "2019",
doi = "10.5006/3257",
language = "English",
journal = "Corrosion",
issn = "0010-9312",
publisher = "National Association of Corrosion Engineers",

}

RIS

TY - JOUR

T1 - Corrosion Assessment of ASME Qualified Welding Procedures for Grade 2101 Lean Duplex Stainless Steel

AU - Guilherme, L. H.

AU - Reccagni, Pierfranco

AU - Benedetti, A.

AU - Fugivara, C. S.

AU - Engelberg, Dirk

PY - 2019

Y1 - 2019

N2 - ASME qualified welding procedures do not guarantee suitable corrosion and passivation properties for lean duplex stainless steel welds. An evaluation of two ASME qualified welding procedures to optimize the corrosion performance of TIG welded grade 2101 duplex stainless steel using ER2209 weld consumable was conducted. The evolution of the microstructure was examined by optical and electron microscopy, ferrite-scope measurements, and Scanning Kelvin Probe Force Microscopy (SKPFM). An electrochemical mini-cell was then used to characterize the electrochemical behaviour of different weld regions using the techniques such as the double loop electrochemical potentio-kinetic reactivation test, standard potentio-dynamic polarization tests, and cyclic potentio-dynamic polarization. The fusion line was the most critical zone for localized corrosion for both welding procedures, due to the formation of Cr and Mo depleted zones, resulting in the highest degree of sensitization. The best performance was attributed to the weld face, due to the presence of higher Cr and Mo contents, highlighting the pitting corrosion resistance. A heat input range of 1.6-1.9 kJ/mm and low current density (WPS1) indicated better corrosion performance of all weld regions. The electrochemical corrosion response was in all cases related to microstructural characteristics of the weld regions. The influence of weld parameters on microstructure development and corrosion performance is discussed.

AB - ASME qualified welding procedures do not guarantee suitable corrosion and passivation properties for lean duplex stainless steel welds. An evaluation of two ASME qualified welding procedures to optimize the corrosion performance of TIG welded grade 2101 duplex stainless steel using ER2209 weld consumable was conducted. The evolution of the microstructure was examined by optical and electron microscopy, ferrite-scope measurements, and Scanning Kelvin Probe Force Microscopy (SKPFM). An electrochemical mini-cell was then used to characterize the electrochemical behaviour of different weld regions using the techniques such as the double loop electrochemical potentio-kinetic reactivation test, standard potentio-dynamic polarization tests, and cyclic potentio-dynamic polarization. The fusion line was the most critical zone for localized corrosion for both welding procedures, due to the formation of Cr and Mo depleted zones, resulting in the highest degree of sensitization. The best performance was attributed to the weld face, due to the presence of higher Cr and Mo contents, highlighting the pitting corrosion resistance. A heat input range of 1.6-1.9 kJ/mm and low current density (WPS1) indicated better corrosion performance of all weld regions. The electrochemical corrosion response was in all cases related to microstructural characteristics of the weld regions. The influence of weld parameters on microstructure development and corrosion performance is discussed.

KW - grade 2101 duplex stainless steel

KW - TIG welding

KW - SKPFM

KW - electrochemical testing

KW - DL-EPR testing

U2 - 10.5006/3257

DO - 10.5006/3257

M3 - Article

JO - Corrosion

JF - Corrosion

SN - 0010-9312

ER -